An Overview of Biomembrane Functions in Plant Responses to High-Temperature Stress

Abstract

Biological membranes are highly ordered structures consisting of mosaics of lipids and proteins. Elevated temperatures can directly and effectively change the properties of these membranes, including their fluidity and permeability, through a holistic effect that involves changes in the lipid composition and/or interactions between lipids and specific membrane proteins. Ultimately, high temperatures can alter microdomain remodeling and instantaneously relay ambient cues to downstream signaling pathways. Thus, dynamic membrane regulation not only helps cells perceive temperature changes but also participates in intracellular responses and determines a cell’s fate. Moreover, due to the specific distribution of extra- and endomembrane elements, the plasma membrane (PM) and membranous organelles are individually responsible for distinct developmental events during plant adaptation to heat stress. This review describes recent studies that focused on the roles of various components that can alter the physical state of the plasma and thylakoid membranes as well as the crucial signaling pathways initiated through the membrane system, encompassing both endomembranes and membranous organelles in the context of heat stress responses.

Plant Cell Walls Tackling Climate Change: Biotechnological Strategies to Improve Crop Adaptations and Photosynthesis in Response to Global Warming

“…The strategy of thermotolerance by plants is based on activating an initial moderate-temperature increase response to contrast subsequent extreme temperatures. This is done by preventing or repairing the potential damage to heat-labile proteins and membranes [183]. Thermotolerance in plants triggers the induction of sets of heat shock proteins (HSPs), which include the action of chaperones which assists conformational protein folding/unfolding and maintains cellular homeostasis under heat stress [184].…”

Salicylic acid and nitric oxide signaling in plant heat stress

“…The MAPK pathways also act as feed‐forward loop for regulating the expression of distinct TFs, e.g. HSFs via phosphorylating cyclin‐dependent kinase A1 and calmodulin‐binding protein kinase 3 upon interacting with protein phosphatase 7 (PP7; Niu and Xiang ). HSFs are highly conserved regulators of the heat shock response among eukaryotes.…”

Proteomic Analysis of Starch Biosynthesis in Maize Seeds

“…This approach also enriches low abundance proteins, allowing for improved separation and detection. [56] Grimaud et al did proteome and phosphoproteome analyses of SAPs from normal maize and mutants affected in starch biosynthesis. [40] The isolated SGs was used to characterize the complement of proteins located in the interior of SGs (SIPs), i.e., SGs proteome.…”